Average Bench: 55.4% (855th of 1080)

more Based on 11,652 user benchmarks.  Models: C400-MTFDDAK256MAM, C400-MTFDDAC256MAM, MTFDDAK2 MTFDDAK256MAM-1K, Micron C400 RealSSD 2.5" 7mm 256GB, MTFDDAK256MAM-1K, Micron C400 RealSSD 2., MTFDDAK256MAM-1K1, MTFDDAK256MAM-1K12

Average average bench

The Micron C400 RealSSD 256GB averaged 44.5% lower than the peak scores attained by the group leaders. This isn't a great result which indicates that there are much faster alternatives on the comparison list.


Avg. 4K Random Write Speed 65.7MB/s
Avg. 4K Random Read Speed 18.4MB/s

Good consistency

The range of scores (95th - 5th percentile) for the Micron C400 RealSSD 256GB is 28.5%. This is a relatively narrow range which indicates that the Micron C400 RealSSD 256GB performs reasonably consistently under varying real world conditions.


Avg. 4K-64Thread Mixed IO Speed 23.6MB/s
Avg. Sustained Write Speed 182MB/s

Average Bench

(Based on 11,652 samples)
Min Avg Max
317 Read 383 433
50 Write 213 261
85.9 Mixed 225 258
48.8 SusWrite 182 257
55.9% 251 MB/s
Min Avg Max
11 4K Read 18.4 23.1
32.7 4K Write 65.7 98.9
9.73 4K Mixed 13.6 16.4
80% 32.6 MB/s
Min Avg Max
90 DQ Read 127 180
50.1 DQ Write 127 223
16.7 DQ Mixed 23.6 32.1
46.1% 92.4 MB/s
User Benchmarks BenchSequentialRandom 4kDeep queue 4k
The fastest SSD (mainstream) averages a speed of 100%
120GB free (System drive)
Firmware: 08TH
SusWrite @10s intervals: 149 209 224 251 229 232 MB/s
Read 388
Write 235
Mixed 233
SusWrite 216
60% 268 MB/s
4K Read 20.5
4K Write 67.1
4K Mixed 14.6
85% 34.1 MB/s
DQ Read 112
DQ Write 105
DQ Mixed 23.1
41% 79.8 MB/s
183GB free (System drive)
Firmware: 08TH
SusWrite @10s intervals: 208 209 201 209 215 217 MB/s
Read 379
Write 231
Mixed 209
SusWrite 210
57% 257 MB/s
4K Read 17.2
4K Write 65.8
4K Mixed 12.8
77% 31.9 MB/s
DQ Read 110
DQ Write 103
DQ Mixed 23.7
41% 79.1 MB/s
57GB free
Firmware: 04TH
SusWrite @10s intervals: 226 224 168 94 70 122 MB/s
Read 353
Write 178
Mixed 242
SusWrite 151
51% 231 MB/s
4K Read 21.1
4K Write 78.7
4K Mixed 14.2
92% 38 MB/s
DQ Read 112
DQ Write 106
DQ Mixed 23.1
41% 80.2 MB/s
16GB free
Firmware: 040H
SusWrite @10s intervals: 217 145 115 114 129 141 MB/s
Read 366
Write 224
Mixed 252
SusWrite 144
55% 246 MB/s
4K Read 19
4K Write 80.4
4K Mixed 13.9
89% 37.8 MB/s
DQ Read 115
DQ Write 108
DQ Mixed 23.7
42% 82.2 MB/s
11,652 MORE »

 Market Share (See Leaders)

The number of benchmark samples for this model as a percentage of all 76,491,807 SSDs tested

Typical C400 RealSSD 256GB Builds (Compare 5,798 builds) See popular component choices, score breakdowns and rankings
Gaming 12%
Tree trunk
Desktop 67%
Battle cruiser
Workstation 11%
Tree trunk

System: HP Z420 Workstation

EDIT WITH CUSTOM PC BUILDER Value: 66% - Good Total price: $345

Popular C400 RealSSD 256GB systems:

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  • Fastest real world speed - Real World Speed measures performance for typical consumers.


1080 Drives (Compared) Thousands of user benchmarks compiled into one comparison list

See how consistently different SSDs perform with varying real world conditions. The charts also illustrate overall performance, popularity and rank.

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